If you haven't seen it, it's on the History Channel in the USA, and they offer full episodes online, with some caveats. The format of the show is three stages, where they progressively thin the group. In the first stage, there are 6 fighters in a free for all melee. Following this round, two of the competitors are eliminated. The remaining four are teamed up, and they do a two-on-two, team round. The winning team advances to a final "duel" round, where one is declared the winner. That person then advances to the end of the season show where all of the winners from each individual episode compete to be the grand champion.
The rules are pretty straightforward. All weapons are blunted. No stabbing is allowed, and no hitting an opponent who is down. I think they also prohibit groin shots, but I'm not sure about that. Otherwise, they just sort of go for it.
They don't seem very skilled to me, but as a lay person, it's hard to really tell. Some questions do come to mind. If they aren't skilled, how would a skilled competitor fare? Why aren't there any skilled competitors on the show? What do you guys think of the format?